AU2018101785A4 - Multi Active Liquid Carbon Dioxide Aerosol - Google Patents
Multi Active Liquid Carbon Dioxide Aerosol Download PDFInfo
- Publication number
- AU2018101785A4 AU2018101785A4 AU2018101785A AU2018101785A AU2018101785A4 AU 2018101785 A4 AU2018101785 A4 AU 2018101785A4 AU 2018101785 A AU2018101785 A AU 2018101785A AU 2018101785 A AU2018101785 A AU 2018101785A AU 2018101785 A4 AU2018101785 A4 AU 2018101785A4
- Authority
- AU
- Australia
- Prior art keywords
- carbon dioxide
- liquid carbon
- aerosol
- solvent
- lco
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000000443 aerosol Substances 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 10
- 239000007921 spray Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 13
- 238000009472 formulation Methods 0.000 claims description 9
- 239000006184 cosolvent Substances 0.000 claims description 8
- 239000002917 insecticide Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- 239000004480 active ingredient Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000003380 propellant Substances 0.000 description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000008263 liquid aerosol Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000005892 Deltamethrin Substances 0.000 description 2
- 229960002483 decamethrin Drugs 0.000 description 2
- OWZREIFADZCYQD-NSHGMRRFSA-N deltamethrin Chemical compound CC1(C)[C@@H](C=C(Br)Br)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 OWZREIFADZCYQD-NSHGMRRFSA-N 0.000 description 2
- 239000008275 solid aerosol Substances 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241000533950 Leucojum Species 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002728 pyrethroid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Multi Active Liquid Carbon Dioxide Aerosol Abstract There is an industry need to improve the efficacy and cost effectiveness of existing automatic space spray products currently used in food storage and warehouses Improved efficacy and cost effectiveness can be achieved by using this innovation This innovation allows new products to be formulated in the future
Description
EDITORIAL NOTE
There is one page in the description only .
Multi Active Liquid Carbon Dioxide Aerosol
2018101785 19 Nov 2018
This innovation enables the formulation of new pesticide in liquid carbon dioxide (LCO2) aerosols products to treat food storage and warehouses. The use of appropriate co-solvents overcomes miscibility, stability, and solubility issues of both liquid and solid pesticides (e.g. Deltamethrin).
While the preferred co-solvents are both volatile and flammable the formulated mixture maintains the non-flammable benefit of the LCO2 solvent-propellant. Volatile solvents avoid any issue of oily deposits build-up on surfaces. Cooling of the liquid aerosol droplet at the nozzle by evaporation of LCO2on exposure to atmospheric pressure ensures a stable aerosol droplet. The LCO2 is maintained as the dominant component to ensure non-flammability.
The pesticide active is initially dissolved in the co-solvent, which needs to be compatible with the LCO2 solvent-propellant system. On dispensing via a metering orifice nozzle the LCO2 evaporates forming liquid aerosol particles containing the dissolved solid insecticide ingredient. The surface area of the two micron (2μ) droplet is large compared to its volumes so the potential for high vaporisation of the solvent exposing solid active ingredient snowflakes is an issue. However the LCO2 evaporation chilling temperature (minus -78°C) ensures cooling of the liquid droplets to retard evaporation of the co-solvent from the liquid/solid aerosol particle. The innovative selection of solvent and solid active ingredient concentration in the LCO2 system mitigates against these issues ensuring uniform distribution of an effective dosage. The LCO2 ensures the elimination of flammability issues even when a very flammable co-solvent is used in the formulation. There are no issues with pressure ratings because of the use of high pressure industrial gas cylinders and pressure rated pipework for the automated dispensing of the LCO2 insecticide mixture. Industrial gas cylinders are rated for much higher pressure than the medium pressure of LCO2 (150 bar V's 50 bar). The final mixture delivers a self-powered space spray with superior aerosol particle sizes suspended for up to two hours with no flammability, odour, staining, toxicological and pollution concerns.
In aerosol products, the propellant is the driving force and liquefied gases are preferred. The choice of aerosol propellant include hydrocarbons (LPG), dimethyl ether (DME), Chlorofluorocarbons (CFCs), Hydrofluorocarbons (HFCs), Hydrofluorolefins (HFO) and Liquid Carbon Dioxide (LCO2). Consideration of the large spaces to be treated, component flammability and cost issues resulted in selecting the inert, non-flammable, low cost LCO2 (high pressure containers and dispensing equipment are offset by a more suitable-for-purpose product).
The challenge was to formulate a new insecticide active ingredient into an effective aerosol formulation. The need was satisfied by developing a suitable, stable and effective LCO2 formulation of a both liquid and solid active insecticide constituents into an agricultural aerosol space spray. The issues of powder insecticide formulation with potential equipment blockages and use of complex mixtures of solvents, surfactants and adjuvants was avoided. The selection of the non-polar LCO2 solvent-propellant allowed selection of the most effective co-solvent without any flammability concerns in the innovative minimalist formulation. The successful homogeneous single LCO2 phase resulted in mutual solubility and stability of the multicomponent liquid-solid system over a wide ambient temperature range. The solid aerosol formulation adapted a co-solvent to ensure a homogeneous liquid phase, which achieves uniform dispensing of a consistent and predictable dose. Example: LCO2 aerosol containing pyrethroid Deltamethrin/LCO2 which flushes and kill insects through direct contact is dispensed using manual spray gun or automatic system using fixed pipeline and dispensing nozzle system. The dispensed aerosol forms small spherical liquid particle to achieve efficacy and uniform targeted distribution. The product could also be mixed on-site using LCO2 and co-solvent/solid solution in high pressure venturi device.
2018101785 19 Nov 2018
EDITORIAL NOTE
There is one page in the claims only .
2018101785 19 Nov 2018
Multi Active Liquid Carbon Dioxide Aerosol
Claims (1)
- Claims • Formulate insecticide active ingredients into an effective liquid carbon dioxide aerosol • Solid insecticide active ingredient dissolved in a co-solvent / liquid carbon dioxide formulation • Liquid carbon dioxide as the dominant component insures non-flammability • Use of co-solvent to achieve miscibility, stability and solubility in liquid carbon dioxide • Solid insecticide active ingredient formulations avoid equipment and nozzle blockages • Volatile flammable co-solvents minimizes oily deposits • Stable aerosol droplets achieved by cooling at the dispensing nozzle • Operator exposure eliminated using automatic controlled spraying • Option to use a pre-mix cylinder or on-site mixing • Can be adapted to existing space spray dispensing systems • Accurate dose metering by orifice and or dose cylinder
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101785A AU2018101785A4 (en) | 2018-11-19 | 2018-11-19 | Multi Active Liquid Carbon Dioxide Aerosol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101785A AU2018101785A4 (en) | 2018-11-19 | 2018-11-19 | Multi Active Liquid Carbon Dioxide Aerosol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2018101785A4 true AU2018101785A4 (en) | 2019-01-03 |
Family
ID=64872724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2018101785A Ceased AU2018101785A4 (en) | 2018-11-19 | 2018-11-19 | Multi Active Liquid Carbon Dioxide Aerosol |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2018101785A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560975A (en) * | 2020-12-23 | 2021-03-26 | 西北工业大学 | Based on S1/2Hyperspectral anomaly detection method of norm low-rank representation model |
-
2018
- 2018-11-19 AU AU2018101785A patent/AU2018101785A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560975A (en) * | 2020-12-23 | 2021-03-26 | 西北工业大学 | Based on S1/2Hyperspectral anomaly detection method of norm low-rank representation model |
| CN112560975B (en) * | 2020-12-23 | 2024-05-14 | 西北工业大学 | S-based1/2Hyperspectral anomaly detection method of norm low-rank representation model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |